The NMR Phenomenon Most nuclei possess an intrinsic angular momentum,P. Any spinning charged particle generates a magnetic field. P=Π(+1)2h/2元 where I spin quantum I=0,1/2,1,3/2,2, The NMR Phenomenon • Most nuclei possess an intrinsic angular momentum, P. • Any spinning charged particle generates a magnetic field. P = [I(I+1)]1/2 h/2p where I = spin quantum # I = 0, 1/2, 1, 3/2, 2, …